Side-by-side specifications of the Synology RS2423RP+ and RS2818RP+, from official datasheets. Differences are highlighted.
| RS2423RP+ | RS2818RP+ | |
| CPU | AMD Ryzen V1780B | Intel Atom C3538 |
| Cores / threads | 4 cores / 8 threads | 4 cores / 4 threads |
| RAM (base) | 8 GB DDR4 ECC UDIMM | 4 GB DDR4 non-ECC UDIMM |
| RAM (max) | 32 GB | 64 GB |
| Drive bays | 12 | 16 |
| Expandable to | 24 | 12 |
| M.2 slots | 0 | 0 (via optional adapter card) |
| Network | 2×1GbE RJ-45 + 1×10GbE RJ-45 | 4 x 1GbE RJ-45 |
| 10GbE | yes | optional |
| Max raw capacity | 216 TB | 336 TB |
| Hot-swap | yes | yes |
| Form factor | 2U | 3U |
| Released | 2023 | 2018 |
| Power consumption | 114.86 W / 42.33 W | 138.1 W / 66.7 W |
| DSM at launch | — | — |
Choose the RS2423RP+ if you want the newer, faster platform: it has a Ryzen V1780B CPU, up to 32GB RAM, 12 bays plus expansion, and optional 10GbE and M.2 SSD cache support. The RS2818RP+ is the older, slower Intel Atom C3538 model with a 64GB RAM ceiling, 16 bays via expansion, and no 10GbE or M.2 support.